Radioactive Drains (RD)

Question 1

What is the purpose of the Radioactive Drain (RD) system?

Answer 1

Receive non-corrosive, radioactive or potentially radioactive liquid wastes from floor and equipment drains.

Question 2

Which of the following sumps does NOT directly pump to the Liquid Radwaste (LR) system?

A. Containment East Sump

B. Containment West Sump

C. Reactor Cavity Sump

D. Non-ESF Sump

Answer 2

C. Reactor Cavity Sump The reactor cavity sump pumps to the Containment East Sump, which then pumps to the Liquid Radwaste (LR) system.

Question 3

The RD system receives drains from all of the following systems EXCEPT:

A. Demineralized Water (DW)

B. Essential Chilled Water (EC)

C. Safety Injection (SI)

D. Domestic Service Water (DS)

Answer 3

D. Domestic Service Water (DS)

Question 4

Which system provides sump pump bearing lubrication?

A. Domestic Service Water (DS)

B. Demineralized Water (DW)

C. Lube Oil (LO)

D. Nuclear Cooling Water (NC)

Answer 4

B. Demineralized Water (DW) DW provides lubrication water to the pump bearings

Question 5

Which of the following describes the properties of the Reactor Cavity Sump Pumps?

A. 2 100% capacity pumps each with a flow rate of 30gal/min

B. 2 100% capacity pumps each with a flow rate of 15gal/min

C. 2 50% capacity pumps each with a flow rate of 30gal/min

D. 2 50% capacity pumps each with a flow rate of 15gal/min

Answer 5

A. 2 100% capacity pumps each with a flow rate of 30gal/min

Question 6

A hi-hi level condition on LC-10 for the Reactor Cavity Sump exists. Which of the following statements is true?

A. Both sump pumps start and continue to run until a lo-lo level condition exists.

B. One pump will start and run until a lo-lo level condition exists.

C. Nothing. LSHH-13 control when the pumps start/stop.

Answer 6

B. One pump will start and run until a lo-lo level condition exists. LC-10 starts the selected pump on a hi-hi level, and secures the pump when a lo-lo level condition exists on LC-10. LSHH-13 will start BOTH pumps on a hi-hi level condition (higher than LC-10), and LC-10 stops them at a lo-lo level.

Question 7

The West Containment Sump has one pipe penetration to receive effluent from floor drains, equipment drains, refueling pool and the refueling pool liner plate leak detector compartment.

True False

Answer 7

True. The West Containment Sump has one pipe penetration. The East Containment Sump has two pipe penetrations. The second is to receive effluent from the reactor cavity sump pumps.

Question 8

Given the following conditions:

1. RDA-UV-23, Containment Sump Pump Header Isolation Valve, is CLOSED
2. A hi-hi level condition on LC-19 has existed for 4 minutes. Which describes the behavior of the West Containment Sump Pump?

A. The pump will start dead-headed, and level will continue to rise.

B. The pump will not have received a start signal from LC-19 due to a time delay.

C. The pump will fail to start due to RDA-UV-23 being closed.

D. The pump will start and level will lower

Answer 8

C. The pump will fail to start due to RDA-UV-23 being closed. In order for the pump to start. RDA-UV-23 needs to be open. There is a 3 minute time delay for LC-19(20) to auto start the pumps on a hi-hi level condition.

Question 9

Which of the following is NOT an input to the ESF Sump?

A. Shutdown Cooling Heat Exchanger Room

B. HPSI Pump Room

C. Charging Pump Room

D. Pipe Chase Area Room

Answer 9

C. Charging Pump Room The ESF Sump receives input from: SDC H/X room CS Room LPSI Room HPSI Room Pipe Chase Area Room

Question 10

Where does the Equipment Drain Tank relief valve route to?

A. ‘A’ ESF Sump

B. Non-ESF Sump

C. ‘B’ ESF Sump

D. Radwaste Sump

Answer 10

B. Non-ESF Sump

Question 11

Which of the following is are inputs to the Fuel Building Sump?

A. Floor drains and equipment drains in the Fuel Building

B. Cask Decontamination Pit

C. Fuel Pool Liner Plate Leak Detector Compartment D. All of the above

Answer 11

D. All of the above. The inputs are: Floor drains and equipment drains located throughout the fuel building Cask Decontamination Pit Fuel Pool Liner Plate Leak Detector Compartment Cask Pit

Question 12

Where is the Decontamination Facility Sump?

A. Unit 1 only

B. Unit 2 only

C. Unit 3 only

D. All 3 units

Answer 12

A. Unit 1 only

Question 13

Which of the following actions describes overriding UV-23 and UV-24 following a CIAS?

A. Take the handswitch to OPEN, look for a white OVERRIDE light, then take the handswitch to CLOSE

B. Take the handswitch to CLOSE, look for an amber OVERRIDE light, then take the handswitch to OPEN

C. Take the handswitch to CLOSE, look for a white OVERRIDE light, then take the handswitch to OPEN D. Take the handswitch to OPEN, look for an amber OVERRIDE light, then take the handswitch to CLOSE

Answer 13

C. Take the handswitch to CLOSE, look for a white OVERRIDE light, then take the handswitch to OPEN

Question 14

What system supplies power to the RD system sump pumps?

A. NG 480 volt load center

B. NH 480 volt motor control center

C. PH class 480 volt motor control center

D. PG class 480 volt load center

Answer 14

B. NH 480 volt motor control center

Question 15

What method of leak detection is used in the reactor cavity sump?

A. Leak detection station which is divided into six leak chase zones.

B. A hi and hi-hi level switch that alarms in the control room

C. Excessive pump run time that exceeds a preset limit

D. The reactor cavity sump does not have a method of leak detection.

Answer 15

C. Excessive pump run time that exceeds a preset limit There is also a time level measurement that will alarm in the control room if fill rate exceeds 60 gals/60 mins. (1 gpm).

Question 16

Which sump pump does NOT have an excessive runtime alarm?

A. Reactor Cavity Sump Pump

B. ESF Sump Pumps

C. Containment Radwaste Sump West

D. Containment Radwaste Sump East

Answer 16

B. ESF Sump Pumps

Question 17

Which of the following conditions would cause a blue SEAS alarm for Isolation Valve UV-23?

A. Tripped thermal overloads at the power supply breaker

B. Valve motor power supply is open

C. Blown 120VAC control power fuse

D. The valve is not fully closed

Answer 17

D. The valve is not fully closed The WHITE (SEIS) alarms let operators know if a component is incapable of responding to a safety actuation because of a breaker trip or other power related problem. Occur whether or not a safety signal is present The BLUE (SEAS) alarms let operators know that a particular piece of equipment is not in the position required by a given actuated safety signal. The SEAS will only occur if the safety signal is present.

Question 18

Per LCO 3.4.14, RCS Operational LEAKAGE shall be limited to _______ primary to secondary LEAKAGE through any one steam generator (SG)

A. 1 gpm

B. 10 gpm

C. 150 gal per day

D. 0 gpm

Answer 18

C. 150 gal per day The Steam Generator Program opreational LEAKAGE performance criterion in NEI 97-06 states “the RCS operational primary to secondary leakage through any one SG shall be limited to 150 gallons per day.” The limit is based on operating experience with SG tube degradation mechanisms that result in tube leakage. the operational leakage rate criterion in conjunction with the implementation of the Steam Generator Program is an effective measure for minimizing the frequency of steam generator tube ruptures.

Question 19

LCO 3.4.14 RCS operational LEAKAGE shall be limited to what 4 criteria?

Answer 19

a. No pressure boundary LEAKAGE; b. 1 gpm unidentified LEAKAGE; c. 10 gpm identified LEAKAGE; and d. 150 gallons per day primary to secondary LEAKAGE through any one steam generator (SG). APPLICABILITY: MODES 1, 2, 3, and 4.

Question 20

What is LCO 3.4.15 RCS Pressure Isolation Valve (PIV) Leakage?

Answer 20

LCO 3.4.15 Leakage from each RCS PIV shall be within limits. APPLICABILITY: MODES 1, 2, and 3, MODE 4, except valves in the shutdown cooling (SDC) flow path when in, or during the transition to or from, the SDC mode of operation.

Question 21

What are the requirements to meet LCO 3.4.16 RCS Leakage Detection Instrumentation?

Answer 21

LCO 3.4.16 Both of the following RCS leakage detection instrumentation shall be OPERABLE: a. One containment sump monitor; and b. One containment atmosphere radioactivity monitor (gaseous and particulate) APPLICABILITY: MODES 1, 2, 3, and 4.

Question 22

Where do the “A” and “B” cable spreading rooms drain?

A. “A” Control Building sump

B. “B” Control Building sump

C. On the ground outside

D. Yard Area sump

Answer 22

C. On the ground outside

Question 23

Draw a simplified diagram of the Radioactive Drains System.

Answer 23

see attached

(EO 1.3)